/**
 *    Copyright ${license.git.copyrightYears} the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.mybatis.generator.codegen.mybatis3.javamapper.elements.annotated;

import static org.mybatis.generator.api.dom.OutputUtilities.javaIndent;
import static org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities.getAliasedEscapedColumnName;
import static org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities.getParameterClause;
import static org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities.getSelectListPhrase;
import static org.mybatis.generator.internal.util.StringUtility.escapeStringForJava;

import java.util.Iterator;

import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.dom.java.FullyQualifiedJavaType;
import org.mybatis.generator.api.dom.java.Interface;
import org.mybatis.generator.api.dom.java.Method;
import org.mybatis.generator.codegen.mybatis3.javamapper.elements.SelectByPrimaryKeyMethodGenerator;

/**
 * 
 * @author Jeff Butler
 */
public class AnnotatedSelectByPrimaryKeyMethodGenerator extends SelectByPrimaryKeyMethodGenerator {

  private boolean useResultMapIfAvailable;

  public AnnotatedSelectByPrimaryKeyMethodGenerator(boolean useResultMapIfAvailable, boolean isSimple) {
    super(isSimple);
    this.useResultMapIfAvailable = useResultMapIfAvailable;
  }

  @Override
  public void addMapperAnnotations(Interface interfaze, Method method) {
    interfaze.addImportedType(new FullyQualifiedJavaType("org.apache.ibatis.annotations.Select")); //$NON-NLS-1$

    StringBuilder sb = new StringBuilder();
    method.addAnnotation("@Select({"); //$NON-NLS-1$
    javaIndent(sb, 1);
    sb.append("\"select\","); //$NON-NLS-1$
    method.addAnnotation(sb.toString());

    Iterator<IntrospectedColumn> iter = introspectedTable.getAllColumns().iterator();
    sb.setLength(0);
    javaIndent(sb, 1);
    sb.append('"');
    boolean hasColumns = false;
    while (iter.hasNext()) {
      sb.append(escapeStringForJava(getSelectListPhrase(iter.next())));
      hasColumns = true;

      if (iter.hasNext()) {
        sb.append(", "); //$NON-NLS-1$
      }

      if (sb.length() > 80) {
        sb.append("\","); //$NON-NLS-1$
        method.addAnnotation(sb.toString());

        sb.setLength(0);
        javaIndent(sb, 1);
        sb.append('"');
        hasColumns = false;
      }
    }

    if (hasColumns) {
      sb.append("\","); //$NON-NLS-1$
      method.addAnnotation(sb.toString());
    }

    sb.setLength(0);
    javaIndent(sb, 1);
    sb.append("\"from "); //$NON-NLS-1$
    sb.append(escapeStringForJava(introspectedTable.getAliasedFullyQualifiedTableNameAtRuntime()));
    sb.append("\","); //$NON-NLS-1$
    method.addAnnotation(sb.toString());

    boolean and = false;
    iter = introspectedTable.getPrimaryKeyColumns().iterator();
    while (iter.hasNext()) {
      IntrospectedColumn introspectedColumn = iter.next();

      sb.setLength(0);
      javaIndent(sb, 1);
      if (and) {
        sb.append("  \"and "); //$NON-NLS-1$
      } else {
        sb.append("\"where "); //$NON-NLS-1$
        and = true;
      }

      sb.append(escapeStringForJava(getAliasedEscapedColumnName(introspectedColumn)));
      sb.append(" = "); //$NON-NLS-1$
      sb.append(getParameterClause(introspectedColumn));
      sb.append('\"');
      if (iter.hasNext()) {
        sb.append(',');
      }
      method.addAnnotation(sb.toString());
    }

    method.addAnnotation("})"); //$NON-NLS-1$

    if (useResultMapIfAvailable) {
      if (introspectedTable.getRules().generateBaseResultMap()
          || introspectedTable.getRules().generateResultMapWithBLOBs()) {
        addResultMapAnnotation(interfaze, method);
      } else {
        addAnnotatedResults(interfaze, method);
      }
    } else {
      addAnnotatedResults(interfaze, method);
    }
  }

  private void addResultMapAnnotation(Interface interfaze, Method method) {
    interfaze.addImportedType(new FullyQualifiedJavaType("org.apache.ibatis.annotations.ResultMap")); //$NON-NLS-1$

    String annotation = String.format(
        "@ResultMap(\"%s.%s\")", //$NON-NLS-1$
        introspectedTable.getMyBatis3SqlMapNamespace(),
        introspectedTable.getRules().generateResultMapWithBLOBs() ? introspectedTable.getResultMapWithBLOBsId()
            : introspectedTable.getBaseResultMapId());
    method.addAnnotation(annotation);
  }

  private void addAnnotatedResults(Interface interfaze, Method method) {
    interfaze.addImportedType(new FullyQualifiedJavaType("org.apache.ibatis.type.JdbcType")); //$NON-NLS-1$

    if (introspectedTable.isConstructorBased()) {
      interfaze.addImportedType(new FullyQualifiedJavaType("org.apache.ibatis.annotations.Arg")); //$NON-NLS-1$
      interfaze.addImportedType(new FullyQualifiedJavaType("org.apache.ibatis.annotations.ConstructorArgs")); //$NON-NLS-1$
      method.addAnnotation("@ConstructorArgs({"); //$NON-NLS-1$
    } else {
      interfaze.addImportedType(new FullyQualifiedJavaType("org.apache.ibatis.annotations.Result")); //$NON-NLS-1$
      interfaze.addImportedType(new FullyQualifiedJavaType("org.apache.ibatis.annotations.Results")); //$NON-NLS-1$
      method.addAnnotation("@Results({"); //$NON-NLS-1$
    }

    StringBuilder sb = new StringBuilder();

    Iterator<IntrospectedColumn> iterPk = introspectedTable.getPrimaryKeyColumns().iterator();
    Iterator<IntrospectedColumn> iterNonPk = introspectedTable.getNonPrimaryKeyColumns().iterator();
    while (iterPk.hasNext()) {
      IntrospectedColumn introspectedColumn = iterPk.next();
      sb.setLength(0);
      javaIndent(sb, 1);
      sb.append(getResultAnnotation(interfaze, introspectedColumn, true, introspectedTable.isConstructorBased()));

      if (iterPk.hasNext() || iterNonPk.hasNext()) {
        sb.append(',');
      }

      method.addAnnotation(sb.toString());
    }

    while (iterNonPk.hasNext()) {
      IntrospectedColumn introspectedColumn = iterNonPk.next();
      sb.setLength(0);
      javaIndent(sb, 1);
      sb.append(getResultAnnotation(interfaze, introspectedColumn, false, introspectedTable.isConstructorBased()));

      if (iterNonPk.hasNext()) {
        sb.append(',');
      }

      method.addAnnotation(sb.toString());
    }

    method.addAnnotation("})"); //$NON-NLS-1$
  }
}
